It's called "white coat syndrome". Another way of saying people get anxious at the thoght of the doctor taking their elevated blood pressure. Therefore it goes up.
Yes and your doctor should be aware of that. Happens to many people.
I don't know if this will work for you, but when I go to the doctor's office, I now do two things to help keep my blood pressure in check. First I give myself plenty of time to get there so I'm not rushing. Second I take something with me to do so I won't focus so much on being at the doctor's. I usually play a game on my phone or play my hand held phase 10 game. Works for me. Hope it helps. :)
Yes, but my dr usually will take blood pressure again, after some time passes, if it's high.